Rhododendron kiusianum ( Benichidori Kyushu Azalea )
Dense , twiglike , dwarf , semi - evergreen shrub that is aboriginal to the mountaintops of Kyushu Island , Japan . R. kiusianum has also been know as R. indicum amoenum and R. obtusum f. japonicum . Hardy to 0 degree F. Leaves are small , obovate , dark honey oil , 1/4 to 3/4 column inch long . flower are small , held in trusses of 2 to 3 per clump , and borne from mid to late outpouring ....